7/28/2022 6:49 AM | |
Joined: 1/21/2013 Last visit: 10/17/2024 Posts: 3194 Rating: (496) |
Hi Vorapob, could you please describe your concern in detail? What kind of "network lost" do you want to detect? When the connection between HMI and PLC is lost, the HMI will generate a message. When the connection to the CU320 is lost, a system diagnostics message will be generated by the PLC. Kind regards |
7/28/2022 9:16 AM | |
Joined: 1/17/2013 Last visit: 10/16/2024 Posts: 1106 Rating: (6) |
Dear Stefan, I mean the communication between PLC and CU320 when network dwonload I would like to set bit M100.0 ON and reset by me. How can I do it ? Best Regards, Vorapob |
Best Regards, |
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7/28/2022 11:15 AM | |
Joined: 1/21/2013 Last visit: 10/17/2024 Posts: 3194 Rating: (496) |
Hi Vorapob,
this can be done using the diagnostic interrupt OB. It should be possible like this:
Maybe for your application, other bit values of the IO state are needed. That is something you have to figure out for yourself. Please notice that the start information of the OB can not easy monitored online. In most case it is advisable to write the start information to e.g. a data block to have them available. Kind regards |
7/28/2022 4:54 PM | |
Joined: 1/17/2013 Last visit: 10/16/2024 Posts: 1106 Rating: (6) |
Dear Stefan, Thank you for your helping but I still confused about What is "#LADDr" vabirable ? Where does I have to define it ? Where are the #IO_state.%x4,#IO_state.%x5,#IO_state.%x15 from ? Can you give me more detail of the code example in the interrupt OB ? Best Regards, Vorapob |
Best Regards, |
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7/29/2022 10:12 AM | |
Joined: 1/21/2013 Last visit: 10/17/2024 Posts: 3194 Rating: (496) |
Hi vorapob, the parameter #LADDR should be compared with the required system constant. I'm not quite sure, if the constant with "IODevice" will be the right one. Maybe you have to try different and manual cause an error. The parameter #IO_State is described in the system manual at chapter diagnostic interrupt OB. Kind regards |
8/3/2022 8:59 AM | |
Joined: 1/17/2013 Last visit: 10/16/2024 Posts: 1106 Rating: (6) |
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Best Regards, |
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8/3/2022 9:13 AM | |
Joined: 1/21/2013 Last visit: 10/17/2024 Posts: 3194 Rating: (496) |
Hi vorapob, according to your picture, I would first try S120_CU320~IODevice for the parameter #LADDR. The meaning of the bits of the parameter #IO_state is described in the system manual. Please note that in my example, the slice access is used. Kind regards |
Last edited by: Stefan Arcularius at: 08/03/2022 09:15:48Changed from S120_CU320~PN-IO to S120_CU320~IODevice due to new image |
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